LYON, FRANCE - JULY 04: French Defence Minister Jean-Yves Le Drian visits the airbase BA 942 July 4, 2014 in Lyon, Mont Verdun, France. This airbase includes the South Sector Operations Center of the Commandement de la Defense Airienne et des Operations Airiennes (CDAOA or Air Defense and Operations Command), which is connected to NATO's Air Command and Control System (ACCS) with an underground alternate strategic command center hardened against chemical and nuclear attack. (Photo by Bruno Vigneron/Getty Images)